If I add ZynAddSubFx to the Song-Editor, open it and click on "Show GUI" something really strange happens. The OS instantly crashes and kicks me back to the Login Screen of UBUNTU! How is this even possible and why is this happening?

Any suggestions?

Last edited by benemoto on Sat Sep 07, 2019 6:44 pm, edited 1 time in total.

Almost similar to a BSOD -That should not happen, and its the first time i hear about it..
The synch setting mentioned above is In
Edit| Settings| Misc : where we advise to disable 'Sync VST plugins to host playback'
..But i seriously doubt that that would hard-crash in that way...
Try it
Let us know the outcome :)

I have 8MB Ram and my Ubuntu runs perfectly. An installed Version of LMMS Version 1.0.0 and ZynaddsubFX runs perfectly. Only the new version 1.2.0 behaves as described above.

musikbear seems to be right. but I have no idea which libs are missing. the bundle file should come with all the necessary libs and yes, it is very uncommon that linux crashes that way. Even impossible.

If I add ZynAddSubFx to the Song-Editor, open it and click on "Show GUI" something really strange happens. The OS instantly crashes and kicks me back to the Login Screen of UBUNTU! How is this even possible and why is this happening?

Any suggestions?

It sounds like this bug: https://bugs.launchpad.net/ubuntu/+sour ... ug/1449167
It've seen it reported in more than one place and it hasn't been fixed. I'm on LinuxMint 19.3 and get it too.
We do have at least one issue on our issue tracker (can't find it right now) but since the bug isn't on our side it's not much we can do.

Just tested this on my other computer and it's indeed fixed in LinuxMint-18.3 which uses Ubuntu 16.04 (Xenial) repos.
Upgrade your OS is unfortunately the way to fix this. Unfortunately Ubuntu is very reluctant to patch bugs in their stable releases so this will not be fixed on their side.